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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.






2. Days which have increasing daylight hours

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3. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.






4. 19-23 (21) days






5. Duct through penis that carries sperm and urine






6. BST given to dairy cattle makes the mammary gland more persistent - helps produce more milk. good as Long-term because it does not cause cow to bulk up - provides more milk/cow Which means less cows needed - less cows need to be given feed - lower co






7. What makes the milk flow through the mammary glands?






8. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






9. 1. sperm is not implanted in egg until hours after breeding. 2. fetal growth has not yet finished.






10. FEED






11. Milk made by mother which includes antibodies for the calf. MUST be given to the calf within the first 24 hrs of life. also provides calf with energy stores. effectiveness lasts from 4-8 months of age.






12. Failure to have both testis (gonads) descend






13. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off






14. Largest dairy cow - largest udder - highly vascular - eat 40-50% dry matter (eat alot) - most total butterfat






15. 265-285 days






16. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






17. (LH) causes female's egg to break (her period)






18. Larger the cow - more milk is produced; smaller the cow - less milk is produced






19. To remove/separate testicles from animal's body before animal reaches puberty






20. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






21. 1-2 days






22. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated






23. 283 days






24. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)






25. FEED






26. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






27. (LH) causes female's egg to break (her period)






28. (male) pushes the testes outward toward the legs for a cool-down off of the body






29. 1. visual evaluation - 2. scrotal circumference - 3. penis and prepuce observation - 4. rectal palpation - 5. libido test - 6. semen evaluation






30. Microscopic - make sure not sterile - very few bulls are actually tested






31. Duct through penis that carries sperm and urine






32. Days which have increasing daylight hours

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33. (male) pushes the testes upward toward the body for warmth or protection






34. Way to know everything is alright with the breeding male






35. Failure to have one testis (gonad) to descend






36. Superior genes are _______ to multiply






37. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






38. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






39. 30 hours after estrus begins






40. Larger the cow - more milk is produced; smaller the cow - less milk is produced






41. Animals which have many estrous periods per year (ex: cow - sow)






42. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market






43. 2 month growth cycle. stored in the epididymis of the bull






44. ~305 days (altough often longer due to breeding difficulties)






45. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






46. Failure to have both testis (gonads) descend






47. Check feet and legs - look for masculine traits in build such as crest and muscling






48. 1. brain function - 2. blood flow - 3. willing female






49. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






50. 265-285 days